Objective: To evaluate the Right atrial (RA) function in patients with pulmonary hypertension using acoustic quantification (AQ) technique.

目的应用声学定量(AQ)技术，研究肺动脉高压患者右房功能改变。

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Objective To investigate the changes of left atrial function before and after Off-pump coronary artery bypass (OPCAB) using transthoracic echocardiography (TTE) and acoustic quantification (AQ).

目的应用经胸超声心动图(tte)声学定量技术(AQ)检测非体外循环冠状动脉搭桥术(OPCAB)前后左心房功能的变化。

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